Table 8.

For each value of $\lambda ,$ Mean Squared Error (MSE) and Mean Absolute Error (MAE) of the ensemble for Testing Period 1, 2 and 3 in Andalusia. For each period, the best performance is highlighted in bold. Last row contains the MSE and MAE of the persistence model tested.

	Testing Period 1		Testing Period 2		Testing Period 3
	(04/04/2020–17/04/2020)		(15/04/2020–28/04/2020)		(07/05/2020–20/05/2020)
$\lambda$	MSE	MAE	MSE	MAE	MSE	MAE
0	309188.29	532.71	174813.93	372.79	188.86	11.00
$2^{-10}$	302755.21	526.93	22697.21	120.07	12713.93	88.64
$2^{-9}$	298320.21	523.07	154944.93	369.50	12623.93	88.36
$2^{-8}$	288510.14	514.14	311559.21	518.21	585.00	18.57
$2^{-7}$	151329.79	368.50	311996.36	518.64	3353.57	51.43
$2^{-6}$	3290.07	40.50	105662.43	311.86	1635.64	35.36
$2^{-5}$	9174.07	71.21	21515.93	118.07	565.00	20.43
$2^{-4}$	8477.29	68.29	554612.29	585.43	214.64	12.21
$2^{-3}$	10905.86	78.86	1034287.57	841.14	243.57	13.29
$2^{-2}$	11893.29	82.86	580431.07	625.79	351.07	16.50
$2^{-1}$	11893.29	82.86	620786.79	648.36	397.14	17.57
$2^0$	11893.29	82.86	705260.29	694.43	498.00	19.86
$2^1$	11893.29	82.86	890921.71	786.86	737.07	24.36
$2^2$	11893.29	82.86	1310319.64	964.93	1387.93	33.36
$2^3$	11893.29	82.86	1310319.64	964.93	2236.71	42.14
Persistence	3243399.00	1429.89	183250.60	347.38	228.52	10.98